No, there isn't a way to create a multi-schema input map in Visual Studio for either BizTalk 2006, 2009 or 2013 (thanks for the clarification @Krishan) without going via the Orchestration/Transform shape route. The only other option is to manually write a map by hand in a text editor, or from a template.
Bear in mind that with the Orchestration/Transform solution, you can throw the Orchestration away once you've used it to create the map.
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